I still recommend watching the original, Let The Right One In, first since it is done extremely well. But if you prefer movies without subtitles, Let Me In, did an excellent job with remaking it for an American audience.

Hey, just wanted to point out that Let the Right One In is about a boy who struggles with becoming a vampire, not a girl (even though IMDB also says Eli is a girl). This is made much more clear in the book, but the movie alludes to it with a scene where we’re briefly shown what appears to be a scar from a castration. I didn’t find out for sure until after viewing the film, but I think it adds a nice additional element to the movie. :)